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N. W. ROBINSON.

Hold -Back Hook.

Patented" Feb. 4,1868.

"PETERS, PNOTO-LH'HDGRAPNER. WASMmGYoN u c guitar tetra gaunt @ffitr.

Letters Patent No. 74,143, dated February 4, 1868. V v I IMPROVEMENT IN HOLD-BACK HOOK.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, N. W. ROBINSON, of Morieh, in the county of Essex, and State of New York, have invented a new and useful Improvement in Hooks for Hold-Back Straps; and l do llBI'ObYdFClil-l't) that the following is a full, clear, andexactdescription thereof, which-will enable those skilled in the art to malieand use the same, reference being had to the accompanying drawings, forming part of this specification.

The presentim'ention relates to an improvement in hooks for hold-heck straps of harnesses, which improvement consists in a novel combination of a. post with the hook, whereby the unfnstening or detachment of the strap therefrom, by accident or otherwise, except so (1esired,is rendered imp ossihle nhile at the same time the unhitching of the strn-p if desired, c'nn b'e'ecco nplished withthe utmost ease and dispatch.

In the accompanying plate of drawingsimy iin'proved hook is illustrated, the figure being a. side view of the same in connection with the shaft to n. wagon or other vehicle. I

Similar letters of reference indicate corresponding pnr'tsp A, in the drawings, represents my improved hook for hold-back straps of harnesses. B, the mainportion to the hook, which by one end, C, is fastened to the carrhzge-shaft, lcziving on opening. D, between the outer end E and the surface of the shaft. F, a. post, fixed in'the shaft, across the opening to thehook, but in such a, manner and of such 5. length as to leare a colnmunieuting passage oropening, between its outer end H and the inside face to the hookB, through -whieh to-passthe hold-hack strap, thnt when in the hook is prevented from becoming detached by the post, as is obvious without any further-explnnntion; the post offering no obstruction to the removal of the hold-beck strap, if so desired.

Claim.

I claim as new, and desire tosecure by Letters Patent The post F, in combination with the hook B, substantially as and for the purpose described.

N. w. ROBINSON.

Witnesses:

ERASTUS POTTER, H. B. WILLARD. 

